Plumber&#39;s furnace.



A. J. AROHAMBAULT.

Patented Mar. 2, 1915.

HE NORRIS PETERS Cp., PHOTO-LITHQ, WASHINGTON, D, c

ARTHUR J. ABCHAMBAULT, OF CHICAGO, ILLINGIS.

PLUMBERS FURNACE.

Specification of Letters Patent.

Patented Mar. 2, 1915.

Application filed October 29, 1914. Serial No. 868,172.

To all whom it may concern Be it known that l, ARTHUR J. ARCHAM- BAULT, a citizen of the United States, residing at Chicago, county of Cook, State of Illinois, have invented a certain new and useful improvement in Plumbers Furnaces, and declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

My invention has for its object to simplify and improve the construction of plumbers furnaces so as to permit repairs to be made easily and conveniently and permit ready inspection of the interior of the fuel conduits and valves.

A further object of my invention is to produce a simple and novel construction which will permit the burning of kerosene without the annoyance and delay incident to starting with kerosene as a fuel.

The various features of novelty whereby my invention is characterized will hereinafter be pointed out with particularity in the claims; but, for a full understanding of my invention and of its objects and advantages, reference may be had to the following detailed description taken in connection with the accompanying drawing, wherein:

Figure 1 is a side elevation of my improved furnace with parts broken away to. disclose the interior construction; Fig. 2 is a top plan view, on a larger scale than Fig. 1, with the parts below the hood or jacket omitted; Fig. 3 is a view similar to Fig. 2 showing the parts in the positions for permitting the removal of the vaporizing coil and burner; Fig. 4. is a section on an enlarged scale through the air valve between the two reservoirs; Fig. 5 is a section through the coupling between the main burner valve and the upright supply pipe for the burner; Fig. 6 is a section through the lower end of the air pump; Fig. 7 is a section on an enlarged scale approximately on line 77 of Fig. 2; and Fig. 8 is a section, on an enlarged scale, through a preferred form of valve between the main delivery pipe and the main reservoir.

Referring to the drawing, 1 represents the main reservoir of the furnace which serves as the supporting base. Within this reservoir is a smaller reservoir, 2. The small reservoir is adapted to contain gasolene, alcohol or other fuel which will permit the furnace to be started readily while the main reservoir is adapted to contain kerosene or other fuel to be used after the burner has been set in operation.

3 is a pump extending into the main reservoir and adapted to supply air under pressure to feed the liquid fuel from either reservoir. In the lower end of the body of the pump is an inwardly projecting inverted cup-shaped part, 4, having in the center thereof a tubular member, 5, forming the discharge conduit for the air. Into the cup-shaped member 1 is screwed an elongated perforated thimble, 6, containing a coiled spring, 7, on which rests a small disk, 8, provided with a stem, 9, projecting upwardly into the tubular member 5 and having on top thereof a suitable packing material, 10. On the under side of the member 8 is a stem, 11, projecting down into the spring.

Air may pass from the main reservoir to the auxiliary reservoir, but no fluid of any kind can pass in the opposite direction. This I accomplish by placing between the upper ends of the two reservoirs a suitable check valve device, 12, best illustrated in Fig. i.

A further feature of my invention consists in a small cup-shaped chamber or compartment, 18, extending downwardly from the top of the main reservoir into the interior thereof and provided with a detachable cap, 14; the chamber or compartment being adapted to contain small repair parts for the furnace.

One of the objectionable characteristics of the ordinary plumbers furnace is that whenever there is anything wrong with the burner or the conduits or valves connected therewith, an almost complete dismemberment of the furnace is required in order to permit the difficulty to be located.

The most important feature of the present invention consists in a novel construction and arrangement which permits the parts where trouble is apt to occur to be easily inspected or even removed entirely without dismantling the furnace or any considerable part thereof. To this end I connect the upright pipe, 15, which delivers the fuel from the main reservoir to the burner, to the controlling valve, 16, just above the reservoir by means of a detachable coupling, 17, which 15 has onthe under side a boss, 19, which fits into the outlet side of the valve 16' and prevents lateral displacement of the pipe when the pipe is brought in position to be coupled. The detachable coupling at the lower end of the pipe 15 permits it to be detached at will without removing the coil, 20, or burner, 21, from the usual hood or jacket, 22, and therefore p'ermitsthe valve 16 to be inspected, replaced or repaired without" disturbing any other part of the furnace. I

I-Ieretofore, whenever it has been deemed necessary or desirable for any reason to remove the coil and burner, it has been neces- V sary to remove the top plate, 23, and then remove the hood and its supports so as to permit the pipe 15 to be unscrewed. In accordance with my invention I cut a radial section out of the top plate, 23, just above the slot, 24, through which the supply pipe passes into the interior of the hood or jacket, so as to form in the top plate a slot, 25, registering with the slot 24. With this arrangement, when the pipe 15 is uncoupled from the valve 16, the burner and coil ma be lifted out throughthe slots 24 and 25. In viewof the intense heat to which the parts are subjected, the top plate might Warp in the vicinity of the slot 25 and-,to prevent this, I have provided a door or cover plate, 26, for closing the slot 25 at ordinary times and simultaneously strengthening and supporting the adjacent portions of the top plate. In the arrangement shown, the member 26 consists of a small curved plate having approximately the shape-of a segment 'of the top plate; it being pivoted to the top plate at one side of the slot 25 by means-of a bolt, 27, or other suitable fastening device; and havingat its other end a jaw, 28, adapted to embrace a second bolt, 29, on the other side of the slot 25. When the member 26' is swung around into the position shown in Fig. 2 when the bolt 29 is tightened, the slot 25 is closed and the ring-like top plate is made continuous.

The top plate is provided with the usual vertical ears, 30, projecting above the same for the purpose of interlocking with the usual bowl-like attachment and, in order to prevent the ear nearest the slot 25 from warping under the influence of the heat, I

which underlies the adjacent car on the top plate when the member 26 is in its slot-closing position; the arm '31 preferably having in its uppersurface a projection, 32, adapted to be received in a. corresponding notch in the under side of the ear 30 and having also lower "end downwardly therein from the provide the member 26' with an arm, 31,

lugs, 33, adapted to engage with the sides of the ear 30. Fuel from the auxiliary reservoir is supplied through a suitable valve connection, 35, into the lower portion of the hood or jacket 22. V r

. One'of the chief causes of annoyance in the use of plumbers furnaces is the entry of grit and dirt into the fuel reservoir.

from where it is carried by the fuel into the controlling valve or valves, conduits and burner, serving to clog them. It is almost impossible to prevent'the entry of grit or dirt into the reservoir or reservoirsandI have therefore provided means for preventing it from leaving the reservoir and reaching a place where it can cause annoyance. I accomplish this by placing in the main controlling valve casing a strainer which will arrest any particles of grit and dirt contained inthefuel and collect them until such a time as it may be convenient to remove the strainer and clean it. In Fig. 8 I have illustrated this feature of my'invention. V V

Referringto Fig. 8, 40 represents the body of the valvecorresponding to the valve 1 16 and consists of anirregular cross-shaped casting one arm, 41, of which is the inlet end while the opposite arm,'42, is the outlet end. Opposite the arm 43 into which the v valve stem, 44,.projects is a short arm, 45.

The inlet passage, 46, 'exten ds from the of the arm 41 up through the arm 45 and terminates at the outer end of this latter arm. The arm 45 has a cupsh'aped recess, 47 of considerable size just beside the passage 46, and the valve mem ber 44 controls communicationbetween the lower end of this cup-shaped recess' and the outet passage 47 'in the arm 42. Within the recess 47 is a thimble, 48, formed of wire'mesh or other suitable materialwhich will serve to strain grit and dirt out of'the fuel passing through the valve. On the outer end of the arm 45 is a cap, 49, suitably packed so as to prevent leakage to the exterior of the cap, While permitting free communication between theinlet passage 46 r and the recess 47. With this arrangement, no dirt or grit can reach the valve seat or any portionof the apparatus beyond the f valve seat. From time to time the cap 49 may be unscrewed and the thimble 48 be removed and cleaned.

I claim: 1. In a plumbers furnace, a jacket open at the top and having a slot extending upper edge,

a ring-like top plate upon the of the jacket, said top plate having a slot extending radially through one side thereof in registration with the slot in the jacket,

upper edge and a detachable" slot-closure and reinforcing member secured to said plate.

2., In a plumbers furnace, a jacket open at the top and having a slot extending downwardly therein from the upper edge, a ring-like top plate upon the upper edge of the jacket, said top plate having a slot extending radially through one side thereof in registration with the slot in the jacket, a short curved plate underlying said top, plate and hinged thereto at one side of the slot, and means for detachably securing the other end of said short curved plate to the top plate on the other side of said slot.

3. In a plumbers furnace, a jacket open at the top and having a slot extending downwardly therein from the upper edge, a ring-like top plate arranged on top of the jacket and having a slot extending radially through one side thereof in registration with the slot in the jacket, a radial vertical ear on the upper side of said plate adjacent to the slot therein, a movable door for closing said slot, and means on said door Copies of this patent may be obtained for five cents each, by addressing the for embracing the inner end of said ear to support the same.

4:. In a plumbers furnace, a fuel reservoir, a jacket open at the top supported above the reservoir, a ring-like top plate upon said jacket, there being a slot extending down through the top plate and into the jacket, a burner within the jacket, a combined supporting and supply pipe for the burner extending outwardly through said slot, and a detachable coupling between said pipe and the reservoir permitting the pipe to be attached and detached without swinging the burner angularly about the pipe.

In testimony whereof, I sign this specification in the presence of two witnesses.

ARTHUR J. ARCHAMBAULT.

Witnesses WM. F. FREUDENREIOI-I, RUTH E. ZETTERVALL.

Commissioner of Patents,

Washington, I). G. 

